Supplementary Materials: Interactive Maps

Figure 2. Geospatial distributions of day-of-surgery cancellation rate in the primary service area of (A) CCHMC and (B) TCH.

A. CCHMC: 2011-2016

B. TCH: 2012-2017

Figure 7. Comparison of surgery cancellation rates at census tract level predicted by the best-performing model to actual data.

Census tracts with significant local correlation between the observed and predicted values are marked with red borders.
#### A. Predicted all-cause surgery cancellation rates at CCHMC.

B. Predicted surgery cancellation rates at TCH.

C. Observed “no show”-related surgery cancellation rates at CCHMC.

D. Predicted “no show”-related surgery cancellation rates at CCHMC.

E. Observed NPO violation-related surgery cancellation rates at CCHMC.

F. Predicted NPO violation-related surgery cancellation rates at CCHMC.

G. Observed patient/family refusal-related surgery cancellation rates at CCHMC.

H. Predicted patient/family refusal-related surgery cancellation rates at CCHMC.